72324907 has 4 divisors (see below), whose sum is σ = 72482256. Its totient is φ = 72167560.

The previous prime is 72324881. The next prime is 72324911. The reversal of 72324907 is 70942327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72324907 - 2¹⁵ = 72292139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72324937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77983 + ... + 78904.

It is an arithmetic number, because the mean of its divisors is an integer number (18120564).

Almost surely, 2^72324907 is an apocalyptic number.

72324907 is a deficient number, since it is larger than the sum of its proper divisors (157349).

72324907 is a wasteful number, since it uses less digits than its factorization.

72324907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157348.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 72324907 is about 8504.4051526253. The cubic root of 72324907 is about 416.6415977095.

The spelling of 72324907 in words is "seventy-two million, three hundred twenty-four thousand, nine hundred seven".